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Workshop => The Mad Scientist => Topic started by: croat1 on February 12, 2022, 07:35:25 PM

Title: Piston
Post by: croat1 on February 12, 2022, 07:35:25 PM

Sharing information

Title: Re: Piston
Post by: broken1 on February 13, 2022, 04:11:43 PM

It's cool seeing things continually evolving for the R. Years ago there was a builder in I believe it was Gresham Or. named Jim Dunken (JD Racing) that built wicked banshee engines. He also did R engines & built one for a good friend & I remember seeing a rectangle shaped window in the piston. I had that done to a 67mm Wiseco by James Dodge awhile back.

Title: Re: Piston
Post by: Jerry Hall on February 18, 2022, 12:48:03 AM

Building two stroke engines was a hobby of Jim Duncan's.  His real job was being a dentist and dental lab owner/operator.   He had plenty of cool porting tools already in his dental lab when he started porting two strokes.  I supplied him with alcohol carburetors and gave him tons of technical advice.

Title: Re: Piston
Post by: Hawaiiysr on February 19, 2022, 03:07:11 PM

Quote from: Jerry Hall on February 18, 2022, 12:48:03 AM

Building two stroke engines was a hobby of Jim Duncan's.  His real job was being a dentist and dental lab owner/operator.   He had plenty of cool porting tools already in his dental lab when he started porting two strokes.  I supplied him with alcohol carburetors and gave him tons of technical advice.

Nice of you to share the knowledge. Along with sharing with us here. I always look forward to your replies